V&H Basic Slip ons

glider

Scubadog

It's agreed that the PC III has many more areas of adjustment than some other tuners do but the reason I suggest the TFI over the PC III even though it does more is the ease of adjustment by someone that isn't familiar with the electronics of the bikes and computers to change a map and install it then.
I have seen quite a few people really mess things up trying to alter the maps in a PC III setup and end up going to the tuner and spend many hundreds of dollars to correct the problem they caused by lack of technical knowledge using this unit.
Using the TFI, there's little room to make mistakes other than fuel richness and no chance of ignition problems caused by too much advance which can be detrimental to an engine in a big way, not even mentioning the cylinder trim and a few other options they offer.
The Harley programming from the factory leaves a bit to be desired but with increased fuel and using the factory ignition curve, it minimises the possibility of a user doing much if any damage if they can just follow simple suggested fuel settings and they do run pretty well with just added fuel. Tweaking the ignition curve with a PC III can often render unwanted pinging under some conditions and then it's back to the drawing board again. For the tinkerer that understands the what and why of the systems, the corrections can be done very easily but for the novice, it's a bit over their head IMO.

There's the option of buying a pre programmed unit and installing it as is but here again, if you run into a pinging problem, how much of a good deal is this. The pre programed units are still a compromise and not maximized for the application because every bike is different and has different demands. Two identical bikes will usually not run identical with the same map in them.

The question I am trying to pose is how much money does a person want to spend to just get a bit more from the bike over and above the TFI is what it comes down to. You can go for the $250 or so and get the TFI and set it up yourself and have a good running bike or you can go for about the same money and get the PC III and try a tune yourself using the butt dyno or even data logging ,or have it custom mapped at a cost of anywhere from $300 - $600 by a tuner.

The options are endless and I try to pose a simple solution for the masses that works well. I use the TFI on every bike I have owned that had EFI with good results.

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smitty901

Glide you know I'm going with you on the TFI
Simple
Relayable
Low cost
can be used to add just a little fuel or to to give the bike rush generating kick inthe tail
exceedes the need of 99% of the rides out there.
good comapny and almost anyone can install it and be up and running in less than a hour many in 30 minutes with no extra ever needed.

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The Infantry leads the way

Scubadog

I fully agree with Glider. Those that are not familiar with the electronics of the bikes or are not at ease working with computers to change a map are much better off with a TFI. I just personnally like having the option of fine tuning adjustments for idle, closed throttle decel, and highway cruise.

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08 Ultra
A/N Big Sucker
Rinehart TD's / PC III